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The function f(x)=asin|x|+be^(|x|) is di...

The function `f(x)=asin|x|+be^(|x|)` is differentiable at x = 0 when -

A

`3a+b=0`

B

`3a-b=0`

C

`a+b=0`

D

`a-b=0`

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